How much additional fuel will be needed to get them to Jupiter?
With the following assumptions:
- Dimensions of a Lego figurine = ~0.59 cubic inches
- The figurines are composed of aluminum, which has a density of 0.098 pounds per cubic inch
- The payload weight of the rocket = ~18,000 pounds
- Launch price = ~$110 million
The weight/mass of the figurines can be calculated as 0.05782 lbs or 26.23 grams:
0.59 cubic inches * 0.098 lbs/cubic inch = 0.05782 lbs
You can calculate the launch cost of the figurines to be roughly $1,060.
($110,000,000/18,000 lbs) * 0.05782 lbs * 3 figurines = $1,060
As for the fuel requirements, I could not locate a source for the amount of fuel required per pound, but it should be fairly easy to come up with the answer if you have that number.